// designing sociable robots p 108-109

class Drive {
  float arousal;
  float valence;
  float ADrive;  
  float target;
  
  Drive() {
    valence=1.0;
    arousal=1.0;
    ADrive=1.00;
    target=1000.0;
  }
  
  void update() {
    float delta=ADrive-target;
    if(delta<0) {
      // understimulated
      ADrive*=1.1;
    } else if (delta>0) {
      // overstimulated
      ADrive*=1.1;
    } else {
      //homeostatic, ok.
    }
  }
  
  void setTarget(float newTarget) {
    target=newTarget;
  }
  
  void stimulate(float intensity) {

  }
  
  void evaluate() {
  
  }
  
  float getEnergy() {
    return ADrive;
  }
}

class Emotion {
  
  float activation;
  
  Emotion() {
    activation=0.0;  
  }
  
  void express() {
  
  }
}

class SocAgent {

  Drive social, stimulation, fatigue;
  Emotion anger, disgust, fear, calm, joy, sorrow, suprise, interest, boredom;
  
  float threshold;
  
  SocAgent() {
    threshold=1000;
    social = new Drive();
    stimulation = new Drive();
    fatigue = new Drive();
  }
  
  void sleep() {
    println("zzz....");
  }
  
  void update() {
    social.update();
    stimulation.update();
    fatigue.update();
  }
  
  void evaluate() {
    if(fatigue.getEnergy()>threshold) {
      sleep();
    }
    
  }
  
  void render() {
    println("\tsocial: "+social.getEnergy());
    println("\tstimulation: "+stimulation.getEnergy());
    println("\tfatigue: "+fatigue.getEnergy());
  }
}


SocAgent kismet;
int t;
void setup() {
 size(400, 400);
 kismet = new SocAgent();
 t=0;
}

void draw() {
  kismet.update();
  kismet.evaluate();
  println("frame "+frameCount);
  kismet.render();
  delay(1000);
  t++;
}